feat: validation import 추가

Author: rnqhstmd

apps/commerce-streamer/build.gradle.kts

@@ -10,6 +10,7 @@ dependencies {
     // web
     implementation("org.springframework.boot:spring-boot-starter-web")
     implementation("org.springframework.boot:spring-boot-starter-actuator")
+    implementation("org.springframework.boot:spring-boot-starter-validation")
 
     // querydsl
     annotationProcessor("com.querydsl:querydsl-apt::jakarta")